Just the same as a ruler has a resting length, as well as a length that can be measured if it passes by you, a contracted length.
An inch is only an inch if everything is stationary.
Hold your ruler in front of your camera while traveling down the highway, take some pictures.
You will find that an inch is now quite different, and will vary even more depending on the shutter speed of the camera. The inch just became much much longer.
An inch is only an inch if everything is stationary.
Hold your ruler in front of your camera while traveling down the highway, take some pictures.
You will find that an inch is now quite different, and will vary even more depending on the shutter speed of the camera. The inch just became much much longer.
The dark energy is anti-matter and it will start collapsing on itself due to it's own inherent anti-gravity, which is normal gravity in respect to itself.
While the outer edges of the stellar-verse are already accelerating and quite free, they will escape and keep travelling outwards.
However our personal inner stellar-verse will be inexorably forced inwards as the dark energy starts collapsing unto itself. At the same time our normal matter will repel it so it never fully collapses, thus it stays in quo.
Eventually there will be a spherical dark energy constant a bit like a black satin fabric blanketing the entire sky and we will forever be limited to the centre of this blanket.
Eventually, due to the nature of chaos all the galaxies inside the dark sphere start clustering together, due to wandering and gravitational pull, thereby a large black-hole starts rolling around within the dark blanket and inevitably incerases in size.
When this black-hole is large enough and happens to move towards the centre, in a pivotal moment of cosmic fate suddenly there is not enough repellance unto the dark blanket to keep everything in check.
This is called "The first day of dark light".
All of a sudden the dark blanket is falling down from the heavens from all sides and nothing can repel it.
An anti-matter black-hole starts forming around a normal matter black-hole.
They dance in chaos and then......
Then
!!
In summatum the Nobel Prize 2011 didn't consider that.
Edit: Actually I'm just writing nonsense in this post but this thread is really mentally stimulating.
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Let me try this one. I really think we are but ants, groveling around on the ground...seemingly not aware of the immensity of it all.
Try wrapping your head around my "theory". Picture if you will, a three dimensional void, extending the three onto infinity. Then, imagine a stack of dollar bills extending onto the limit of our known universe...this count of bills represent the number of zeros behind the number ONE. This figure represents a distance measured in light-years. Now, shrink the scale of "the big bang" down to a firecracker.....and separate two of these events with the previous distance...& scale it back up.
A truly massive volume occupied with universes popping into existence everywhere, some expand forever growing thinner & thinner till a single particle occupies an immense volume, rather a universe of its own.
Some universes cycle, expansion & crushing willy nilly.....some fizzling out, a "dud" if you will....condemned to stay a hot concentrated mass.
_________________________________________________Rick........
Try wrapping your head around my "theory". Picture if you will, a three dimensional void, extending the three onto infinity. Then, imagine a stack of dollar bills extending onto the limit of our known universe...this count of bills represent the number of zeros behind the number ONE. This figure represents a distance measured in light-years. Now, shrink the scale of "the big bang" down to a firecracker.....and separate two of these events with the previous distance...& scale it back up.
A truly massive volume occupied with universes popping into existence everywhere, some expand forever growing thinner & thinner till a single particle occupies an immense volume, rather a universe of its own.
Some universes cycle, expansion & crushing willy nilly.....some fizzling out, a "dud" if you will....condemned to stay a hot concentrated mass.
_________________________________________________Rick........
The yardstick of space is the speed of light. It has obviously changed
from a rather uniform speed and distribution of stuff when the universe
was young. To one that is relatively faster where stuff has snowballed,
and relatively slower where there is now mostly void...
Thus we appear smaller by that yardstick, and the empty spaces larger.
Real size of this snowglobe hasn't changed since the day it was shook.
Same thing you call the big bang, but everywhere at once.
I don't think that all stuff counts against the yardstick, else we'd see
difference in the speed of light in orbit vs near the ground. Maybe
only affected by the dark matter halo? Though I don't know why dark
matter takes the form of a diffuse halo, not more closely aligned with
concentrations of normal matter.
from a rather uniform speed and distribution of stuff when the universe
was young. To one that is relatively faster where stuff has snowballed,
and relatively slower where there is now mostly void...
Thus we appear smaller by that yardstick, and the empty spaces larger.
Real size of this snowglobe hasn't changed since the day it was shook.
Same thing you call the big bang, but everywhere at once.
I don't think that all stuff counts against the yardstick, else we'd see
difference in the speed of light in orbit vs near the ground. Maybe
only affected by the dark matter halo? Though I don't know why dark
matter takes the form of a diffuse halo, not more closely aligned with
concentrations of normal matter.
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It's those kind of exponential expansions that scare the sh!t out of the pants of them scientists and troubadours and members of audio forums spilled all over the universe!
The time spent at reading about and trying to decipher our universe in the pursuit of deeper knowledge regarding our expanded future of ultimate and fatal destiny by any scientific tools available yesterday today tomorrow and from the greatest of the greatest philosophers stone and physicians and musicians and audio engineers and astronomers who ever existed and still exist and will exist in the future generations of our planet, would be best spent at living in harmony today among all of each other.
That would make our universe a much better place to live in, IMO. ...And expand graciously with dignity and elasticity.
That would make our universe a much better place to live in, IMO. ...And expand graciously with dignity and elasticity.
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There's no evidence that the speed of light in a vacuum has ever changed with time. Of course, it does decrease when traveling through materials, such as the lenses in your reading glasses.
It is the frequency of light that changes in a gravitational field. The velocity remains exactly the same.
I would call the absurd illusion of a universe that expands from
a singularity that once contained everything, faster than our local
speed of light today, then slows, then accelerates, "evidence".
Evidence that the best conclusions we have so-far drawn are
not yet consistent with reality.
Its very simple. Rather than take the absurd view that something
mostly empty and maybe infinite is somehow getting bigger, and
for a substantial early time violated its own speed limit, imagine a
universe the same size now it always ever was. You perceive red
shift and accelerating expansion because your galaxy and all
others are shrinking as they accumulate dark yardstick halos,
and depleting the space between.
The bang happened everywhere at once and shook all the jelly
out of the donuts. Our snowglobe has been settling back down
toward a quiet field of donuts completely out of view of each
other, just as it probably started. Until the next big shake-up,
which could happen again any instant. Waaaait for it!
I have reduced many absurdities of the current view to one.
Not saying even one absurdity in any half-truth is tolerable.
Accepting and preferring one absurdity over another is what
fuels too many wars.
a singularity that once contained everything, faster than our local
speed of light today, then slows, then accelerates, "evidence".
Evidence that the best conclusions we have so-far drawn are
not yet consistent with reality.
Its very simple. Rather than take the absurd view that something
mostly empty and maybe infinite is somehow getting bigger, and
for a substantial early time violated its own speed limit, imagine a
universe the same size now it always ever was. You perceive red
shift and accelerating expansion because your galaxy and all
others are shrinking as they accumulate dark yardstick halos,
and depleting the space between.
The bang happened everywhere at once and shook all the jelly
out of the donuts. Our snowglobe has been settling back down
toward a quiet field of donuts completely out of view of each
other, just as it probably started. Until the next big shake-up,
which could happen again any instant. Waaaait for it!
I have reduced many absurdities of the current view to one.
Not saying even one absurdity in any half-truth is tolerable.
Accepting and preferring one absurdity over another is what
fuels too many wars.
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It is in the natural equilibrium of man to explore beyond the boundaries, in its natural raison de vivre, ultimate comprehension of his surroundings, internal external.
And it will always be till the eternity of times.
Scientific theories on the universe and beyond (including expansion or not), is the exploration of the creation of all creations, without limitations.
The brain is within the level of time and space. ...A quantum loop in a series of leaps.
And it will always be till the eternity of times.
Scientific theories on the universe and beyond (including expansion or not), is the exploration of the creation of all creations, without limitations.
The brain is within the level of time and space. ...A quantum loop in a series of leaps.
Basic SR and QM are not high level theoretical issues - they are first year material for physics undergraduates. At the very least they should be handled properly by the second year of an EE course.Philosophil said:
I think you will find that gravitational lensing is ample evidence that the velocity of light changes in a gravitational field.rayma said:
Can the speed of light accelerate and decelerate in different spatial environments of various physical (matter, substance) compositions?
How come sound is absent in space?
And why living near the ocean water surface is a different sound (music) experience than living near the top of Mount Everest?
...Or two twenty thousand feet below sea level.
Does sound change in the horizontal plane when in constant (same) position towards its source of origin?
How come sound is absent in space?
And why living near the ocean water surface is a different sound (music) experience than living near the top of Mount Everest?
...Or two twenty thousand feet below sea level.
Does sound change in the horizontal plane when in constant (same) position towards its source of origin?
I think so... is this not how a prism splits the colours ?
Is it absent ? all depends on the density of the medium that will propagate the sound ?
See above ... density of the sound propagating medium ( helium balloon lol)
No. The sound emitted will change with different source alignements... but once out there ? no.
In the absence of a gravitational field, the speed of light is constant. When such a field exists, the general theory of relativity describes how the geometry of space changes, causing the speed of light to appear to differ from that in an inertial frame of reference. It does not actually change.
Are you saying that in a non gravitational field, a prism would have no effect on light passing through it ?
A prism works the same in a gravitational field or not. Each frequency of light travels at a different speed through the glass. The refraction varies with frequency, causing dispersion into a spectrum.
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